[wp-trac] [WordPress Trac] #45708: Allow retrieving adjacent image link markup without echoing it

Thu Jun 3 15:16:40 UTC 2021

#45708: Allow retrieving adjacent image link markup without echoing it
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 Reporter:  flixos90                             |       Owner:
                                                 |  hellofromTonya
     Type:  defect (bug)                         |      Status:  assigned
 Priority:  normal                               |   Milestone:  5.8
Component:  Media                                |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests has-        |     Focuses:  template
  testing-info                                   |
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Changes (by hellofromTonya):

 * keywords:  has-patch has-unit-tests => has-patch has-unit-tests has-
     testing-info


Comment:

 == Steps to manually test

 To manually test the original functions still work with output buffering,
 do these steps:

 - Add at least 3 images to the Media Library
 - Create a `wp-content/mu-plugins/test.php` file
 - Add this test code:
 {{{#!php
 <?php

 add_filter( 'the_content', 'test_45708' );
 function test_45708( $content ) {
     ob_start();
     previous_image_link( false, '← Previous Image' );
     $previous_image_link = ob_get_clean();

     ob_start();
     next_image_link( false, 'Next Image →' );
     $next_image_link = ob_get_clean();

     $nav = <<<HTML
     <nav id="image-navigation" class="navigation" role="navigation">
         <span class="previous-image">$previous_image_link</span>
                 <span class="next-image">$next_image_link</span>
     </nav>
 HTML;

     return $content . $nav;
 }

 }}}
 - View one of the images by going to `Media` > Select an image > `View`

 Notice the navigation links under the image:
 ← Previous Image Next Image →

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Ticket URL: <https://core.trac.wordpress.org/ticket/45708#comment:11>
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